One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,4,6)(3,7,8,5)(10,12)(14,15)(17,18)(19,23)(20,22)(21,24)(25,27)(26,31)(28,30)(29,32)(1,3,4,8)(2,5,6,7)(9,10,13,12)(11,15,16,14)(17,18)(19,25)(20,22)(21,24)(23,27)(26,32)(28,30)(29,31)(1,3)(2,5)(4,8)(6,7)(9,11,13,16)(10,14,12,15)(18,20)(23,25)(24,28)(31,32)(1,3)(2,5)(4,8)(6,7)(9,12,13,10)(11,15,16,14)(17,19)(18,23)(20,25)(21,29)(22,27)(24,32)(26,30)(28,31)(1,2)(3,5)(4,6)(7,8)(17,20,22,18)(19,25,27,23)(21,28,30,24)(26,32,29,31)(17,21,22,30)(18,24,20,28)(19,26,27,29)(23,31,25,32)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.